/*
 * E57Simple - public header of E57 Simple API for reading/writing .e57 files.
 *
 * Copyright (c) 2010 Stan Coleby (scoleby@intelisum.com)
 * Copyright (c) 2020 PTC Inc.
 *
 * Permission is hereby granted, free of charge, to any person or organization
 * obtaining a copy of the software and accompanying documentation covered by
 * this license (the "Software") to use, reproduce, display, distribute,
 * execute, and transmit the Software, and to prepare derivative works of the
 * Software, and to permit third-parties to whom the Software is furnished to
 * do so, all subject to the following:
 *
 * The copyright notices in the Software and this entire statement, including
 * the above license grant, this restriction and the following disclaimer,
 * must be included in all copies of the Software, in whole or in part, and
 * all derivative works of the Software, unless such copies or derivative
 * works are solely in the form of machine-executable object code generated by
 * a source language processor.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
 * SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
 * FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#pragma once

//! @file E57SimpleData.h Data structures for E57 Simple API

#include "E57Format.h"

namespace e57
{

   //! Indicates to use FloatNode instead of ScaledIntegerNode in fields that can use both.
   constexpr double E57_NOT_SCALED_USE_FLOAT = 0.;
   //! Indicates to use ScaledIntegerNode insterad of FloatNode in fields that can use both.
   constexpr double E57_NOT_SCALED_USE_INTEGER = -1.;

   //! @cond documentNonPublic   The following isn't part of the API, and isn't documented.
   class ReaderImpl;
   class WriterImpl;
   //! @endcond

   //! @brief Defines a rigid body translation in Cartesian coordinates.
   struct E57_DLL Translation
   {
      double x{ 0. }; //!< The X coordinate of the translation (in meters)
      double y{ 0. }; //!< The Y coordinate of the translation (in meters)
      double z{ 0. }; //!< The Z coordinate of the translation (in meters)

      bool operator==( const Translation &rhs ) const
      {
         return ( x == rhs.x ) && ( y == rhs.y ) && ( z == rhs.z );
      }
      bool operator!=( const Translation &rhs ) const
      {
         return !operator==( rhs );
      }

      static Translation identity()
      {
         return {};
      }
   };

   //! @brief Represents a rigid body rotation.
   struct E57_DLL Quaternion
   {
      double w{ 0. }; //!< The real part of the quaternion. Shall be nonnegative
      double x{ 0. }; //!< The i coefficient of the quaternion
      double y{ 0. }; //!< The j coefficient of the quaternion
      double z{ 0. }; //!< The k coefficient of the quaternion

      bool operator==( const Quaternion &rhs ) const
      {
         return ( w == rhs.w ) && ( x == rhs.x ) && ( y == rhs.y ) && ( z == rhs.z );
      }
      bool operator!=( const Quaternion &rhs ) const
      {
         return !operator==( rhs );
      }

      static Quaternion identity()
      {
         Quaternion identity;
         identity.w = 1.;
         return identity;
      }
   };

   //! @brief Defines a rigid body transform in cartesian coordinates.
   struct E57_DLL RigidBodyTransform
   {
      Quaternion rotation;     //!< A unit quaternion representing the rotation, R, of the transform
      Translation translation; //!< The translation point vector, t, of the transform

      bool operator==( const RigidBodyTransform &rhs ) const
      {
         return ( rotation == rhs.rotation ) && ( translation == rhs.translation );
      }
      bool operator!=( const RigidBodyTransform &rhs ) const
      {
         return !operator==( rhs );
      }

      static RigidBodyTransform identity()
      {
         return { Quaternion::identity(), Translation::identity() };
      }
   };

   //! @brief Specifies an axis-aligned box in local cartesian coordinates.
   struct E57_DLL CartesianBounds
   {
      double xMinimum{ -E57_DOUBLE_MAX }; //!< The minimum extent of the bounding box in the X direction
      double xMaximum{ E57_DOUBLE_MAX };  //!< The maximum extent of the bounding box in the X direction
      double yMinimum{ -E57_DOUBLE_MAX }; //!< The minimum extent of the bounding box in the Y direction
      double yMaximum{ E57_DOUBLE_MAX };  //!< The maximum extent of the bounding box in the Y direction
      double zMinimum{ -E57_DOUBLE_MAX }; //!< The minimum extent of the bounding box in the Z direction
      double zMaximum{ E57_DOUBLE_MAX };  //!< The maximum extent of the bounding box in the Z direction

      bool operator==( const CartesianBounds &rhs ) const
      {
         return ( xMinimum == rhs.xMinimum ) && ( xMaximum == rhs.xMaximum ) && ( yMinimum == rhs.yMinimum ) &&
                ( yMaximum == rhs.yMaximum ) && ( zMinimum == rhs.zMinimum ) && ( zMaximum == rhs.zMaximum );
      }
      bool operator!=( const CartesianBounds &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores the bounds of some data in spherical coordinates.
   struct E57_DLL SphericalBounds
   {
      SphericalBounds();       // constructor in the cpp to avoid exposing M_PI
      double rangeMinimum;     //!< The minimum extent of the bounding region in the r direction
      double rangeMaximum;     //!< The maximum extent of the bounding region in the r direction
      double elevationMinimum; //!< The minimum extent of the bounding region from the horizontal plane
      double elevationMaximum; //!< The maximum extent of the bounding region from the horizontal plane
      double azimuthStart; //!< The starting azimuth angle defining the extent of the bounding region around the z axis
      double azimuthEnd;   //!< The ending azimuth angle defining the extent of the bounding region around the z axix

      bool operator==( const SphericalBounds &rhs ) const
      {
         return ( rangeMinimum == rhs.rangeMinimum ) && ( rangeMaximum == rhs.rangeMaximum ) &&
                ( elevationMinimum == rhs.elevationMinimum ) && ( elevationMaximum == rhs.elevationMaximum ) &&
                ( azimuthStart == rhs.azimuthStart ) && ( azimuthEnd == rhs.azimuthEnd );
      }
      bool operator!=( const SphericalBounds &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores the minimum and maximum of rowIndex, columnIndex, and returnIndex fields for a set of points.
   struct E57_DLL IndexBounds
   {
      int64_t rowMinimum{ 0 }; //!< The minimum rowIndex value of any point represented by this IndexBounds object.
      int64_t rowMaximum{ 0 }; //!< The maximum rowIndex value of any point represented by this IndexBounds object.
      int64_t columnMinimum{
         0
      }; //!< The minimum columnIndex value of any point represented by this IndexBounds object.
      int64_t columnMaximum{
         0
      }; //!< The maximum columnIndex value of any point represented by this IndexBounds object.
      int64_t returnMinimum{
         0
      }; //!< The minimum returnIndex value of any point represented by this IndexBounds object.
      int64_t returnMaximum{
         0
      }; //!< The maximum returnIndex value of any point represented by this IndexBounds object.

      bool operator==( const IndexBounds &rhs ) const
      {
         return ( rowMinimum == rhs.rowMinimum ) && ( rowMaximum == rhs.rowMaximum ) &&
                ( columnMinimum == rhs.columnMinimum ) && ( columnMaximum == rhs.columnMaximum ) &&
                ( returnMinimum == rhs.returnMinimum ) && ( returnMaximum == rhs.returnMaximum );
      }
      bool operator!=( const IndexBounds &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Specifies the limits for the value of signal intensity that a sensor is capable of producing
   struct E57_DLL IntensityLimits
   {
      double intensityMinimum{ 0. }; //!< The minimum producible intensity value. Unit is unspecified.
      double intensityMaximum{ 0. }; //!< The maximum producible intensity value. Unit is unspecified.

      bool operator==( const IntensityLimits &rhs ) const
      {
         return ( intensityMinimum == rhs.intensityMinimum ) && ( intensityMaximum == rhs.intensityMaximum );
      }
      bool operator!=( const IntensityLimits &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Specifies the limits for the value of red, green, and blue color that a sensor is capable of producing.
   struct E57_DLL ColorLimits
   {
      double colorRedMinimum{ 0. };   //!< The minimum producible red color value. Unit is unspecified.
      double colorRedMaximum{ 0. };   //!< The maximum producible red color value. Unit is unspecified.
      double colorGreenMinimum{ 0. }; //!< The minimum producible green color value. Unit is unspecified.
      double colorGreenMaximum{ 0. }; //!< The maximum producible green color value. Unit is unspecified.
      double colorBlueMinimum{ 0. };  //!< The minimum producible blue color value. Unit is unspecified.
      double colorBlueMaximum{ 0. };  //!< The maximum producible blue color value. Unit is unspecified.

      bool operator==( const ColorLimits &rhs ) const
      {
         return ( colorRedMinimum == rhs.colorRedMinimum ) && ( colorRedMaximum == rhs.colorRedMaximum ) &&
                ( colorGreenMinimum == rhs.colorGreenMinimum ) && ( colorGreenMaximum == rhs.colorGreenMaximum ) &&
                ( colorBlueMinimum == rhs.colorBlueMinimum ) && ( colorBlueMaximum == rhs.colorBlueMaximum );
      }
      bool operator!=( const ColorLimits &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Encodes date and time.
   //! @details The date and time is encoded using a single floating point number, stored as an E57 Float element which
   //! is based on the Global Positioning
   //!	System (GPS) time scale.
   struct E57_DLL DateTime
   {
      double dateTimeValue{
         0.
      }; //!< The time, in seconds, since GPS time was zero. This time specification may include fractions of a second.
      int32_t isAtomicClockReferenced{
         0
      }; //!< This element should be present, and its value set to 1 if, and only if, the time stored in the
         //!< dateTimeValue element is obtained from an atomic clock time source. Shall be either 0 or 1.

      bool operator==( const DateTime &rhs ) const
      {
         return ( dateTimeValue == rhs.dateTimeValue ) && ( isAtomicClockReferenced == rhs.isAtomicClockReferenced );
      }
      bool operator!=( const DateTime &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores the top-level information for the XML section of the file.
   struct E57_DLL E57Root
   {
      ustring formatName;         //!< Contains the string "ASTM E57 3D Image File"
      ustring guid;               //!< A globally unique identification string for the current version of the file
      uint32_t versionMajor{ 1 }; //!< Major version number, should be 1
      uint32_t versionMinor{ 0 }; //!< Minor version number, should be 0
      ustring e57LibraryVersion;  //!< The version identifier for the E57 file format library that wrote the file.
      DateTime creationDateTime;  //!< Date/time that the file was created
      int64_t data3DSize{ 0 };    //!< Size of the Data3D vector for storing 3D imaging data
      int64_t images2DSize{ 0 };  //!< Size of the A heterogeneous Vector of Images2D Structures for storing 2D images
                                  //!< from a camera or similar device.
      ustring coordinateMetadata; //!< Information describing the Coordinate Reference System to be used for the file
   };

   //! @brief Stores information about a single group of points in a row or column
   struct E57_DLL LineGroupRecord
   {
      int64_t idElementValue{
         0
      }; //!< The value of the identifying element of all members in this group. Shall be in the interval [0, 2^63).
      int64_t startPointIndex{
         0
      }; //!< The record number of the first point in the continuous interval. Shall be in the interval [0, 2^63).
      int64_t pointCount{
         0
      }; //!< The number of PointRecords in the group. Shall be in the interval [1, 2^63). May be zero.
      CartesianBounds cartesianBounds; //!< The bounding box (in Cartesian coordinates) of all points in the group
                                       //!< (in the local coordinate system of the points).
      SphericalBounds sphericalBounds; //!< The bounding region (in spherical coordinates) of all the points in the
                                       //!< group (in the local coordinate system of the points).
   };

   //! @brief Stores a set of point groups organized by the rowIndex or columnIndex attribute of the PointRecord
   struct E57_DLL GroupingByLine
   {
      ustring idElementName;   //!< The name of the PointRecord element that identifies which group the point is in. The
                               //!< value of this string must be "rowIndex" or "columnIndex"
      int64_t groupsSize{ 0 }; //!< Size of the groups compressedVector of LineGroupRecord structures
      int64_t pointCountSize{ 0 }; //!< This is the size value for the LineGroupRecord::pointCount.
   };

   //! @brief Supports the division of points within an Data3D into logical groupings
   struct E57_DLL PointGroupingSchemes
   {
      GroupingByLine groupingByLine; //!< Grouping information by row or column index
   };

   //! @brief Used to interrogate if standardized fields are available
   struct E57_DLL PointStandardizedFieldsAvailable
   {
      bool cartesianXField{ false }; //!< Indicates that the PointRecord cartesianX field is active
      bool cartesianYField{ false }; //!< Indicates that the PointRecord cartesianY field is active
      bool cartesianZField{ false }; //!< Indicates that the PointRecord cartesianZ field is active
      bool cartesianInvalidStateField{
         false
      }; //!< Indicates that the PointRecord cartesianInvalidState field is active

      bool sphericalRangeField{ false };     //!< Indicates that the PointRecord sphericalRange field is active
      bool sphericalAzimuthField{ false };   //!< Indicates that the PointRecord sphericalAzimuth field is active
      bool sphericalElevationField{ false }; //!< Indicates that the PointRecord sphericalElevation field is active
      bool sphericalInvalidStateField{
         false
      }; //!< Indicates that the PointRecord sphericalInvalidState field is active

      double pointRangeMinimum{
         E57_FLOAT_MIN
      }; //!< Indicates that the PointRecord cartesian and range fields should be configured with this minimum value
         //!< -E57_FLOAT_MAX or -E57_DOUBLE_MAX. If using a ScaledIntegerNode then this needs to be a minimum range
         //!< value.
      double pointRangeMaximum{
         E57_FLOAT_MAX
      }; //!< Indicates that the PointRecord cartesian and range fields should be configured with this maximum value
         //!< E57_FLOAT_MAX or E57_DOUBLE_MAX. If using a ScaledIntegerNode then this needs to be a maximum range value.
      double pointRangeScaledInteger{
         E57_NOT_SCALED_USE_FLOAT
      }; //!< Indicates that the PointRecord cartesain and range fields should be configured as a ScaledIntegerNode with
         //!< this scale setting. If 0. then use FloatNode.

      double angleMinimum{
         E57_FLOAT_MIN
      }; //!< Indicates that the PointRecord angle fields should be configured with this minimum value -E57_FLOAT_MAX or
         //!< -E57_DOUBLE_MAX. If using a ScaledIntegerNode then this needs to be a minimum angle value.
      double angleMaximum{
         E57_FLOAT_MAX
      }; //!< Indicates that the PointRecord angle fields should be configured with this maximum value E57_FLOAT_MAX or
         //!< E57_DOUBLE_MAX. If using a ScaledIntegerNode then this needs to be a maximum angle value.
      double angleScaledInteger{
         E57_NOT_SCALED_USE_FLOAT
      }; //!< Indicates that the PointRecord angle fields should be configured as a ScaledIntegerNode with this scale
         //!< setting. If 0. then use FloatNode.

      bool rowIndexField{ false };                //!< Indicates that the PointRecord rowIndex field is active
      uint32_t rowIndexMaximum{ E57_UINT32_MAX }; //!< Indicates that the PointRecord index fields should be configured
                                                  //!< with this maximum value where the minimum will be set to 0.
      bool columnIndexField{ false };             //!< Indicates that the PointRecord columnIndex field is active
      uint32_t columnIndexMaximum{
         E57_UINT32_MAX
      }; //!< Indicates that the PointRecord index fields should be configured with this maximum value where the minimum
         //!< will be set to 0.

      bool returnIndexField{ false };         //!< Indicates that the PointRecord returnIndex field is active
      bool returnCountField{ false };         //!< Indicates that the PointRecord returnCount field is active
      uint8_t returnMaximum{ E57_UINT8_MAX }; //!< Indicates that the PointRecord return fields should be configured
                                              //!< with this maximum value where the minimum will be set to 0.

      bool timeStampField{ false };          //!< Indicates that the PointRecord timeStamp field is active
      bool isTimeStampInvalidField{ false }; //!< Indicates that the PointRecord isTimeStampInvalid field is active
      double timeMaximum{
         E57_DOUBLE_MAX
      }; //!< Indicates that the PointRecord timeStamp fields should be configured with this maximum value. like
         //!< E57_UINT32_MAX, E57_FLOAT_MAX or E57_DOUBLE_MAX
      double timeMinimum{ E57_DOUBLE_MIN }; //!< Indicates that the PointRecord timeStamp fields should be configured
                                            //!< with this minimum value -E57_FLOAT_MAX or -E57_DOUBLE_MAX. If using a
                                            //!< ScaledIntegerNode then this needs to be a minimum time value.
      double timeScaledInteger{
         E57_NOT_SCALED_USE_FLOAT
      }; //!< Indicates that the PointRecord timeStamp fields should be configured as a ScaledIntegerNode with this
         //!< scale setting. If 0. then use FloatNode, if -1. use IntegerNode.

      bool intensityField{ false };          //!< Indicates that the PointRecord intensity field is active
      bool isIntensityInvalidField{ false }; //!< Indicates that the PointRecord isIntensityInvalid field is active
      double intensityScaledInteger{
         E57_NOT_SCALED_USE_INTEGER
      }; //!< Indicates that the PointRecord intensity fields should be configured as a ScaledIntegerNode with this
         //!< setting. If 0. then use FloatNode, if -1. use IntegerNode

      bool colorRedField{ false };       //!< indicates that the PointRecord colorRed field is active
      bool colorGreenField{ false };     //!< indicates that the PointRecord colorGreen field is active
      bool colorBlueField{ false };      //!< indicates that the PointRecord colorBlue field is active
      bool isColorInvalidField{ false }; //!< Indicates that the PointRecord isColorInvalid field is active

      bool normalX{ false }; //!< Indicates that the PointRecord nor:normalX field is active
      bool normalY{ false }; //!< Indicates that the PointRecord nor:normalY field is active
      bool normalZ{ false }; //!< Indicates that the PointRecord nor:normalZ field is active
   };

   //! @brief Stores the top-level information for a single lidar scan
   struct E57_DLL Data3D
   {
      ustring name; //!< A user-defined name for the Data3D.
      ustring guid; //!< A globally unique identification string for the current version of the Data3D object
      std::vector<ustring> originalGuids; //!< A vector of globally unique identification Strings from which the points
                                          //!< in this Data3D originated.
      ustring description;                //!< A user-defined description of the Image

      ustring sensorVendor; //!< The name of the manufacturer for the sensor used to collect the points in this Data3D.
      ustring sensorModel;  //!< The model name or number for the sensor.
      ustring sensorSerialNumber;    //!< The serial number for the sensor.
      ustring sensorHardwareVersion; //!< The version number for the sensor hardware at the time of data collection.
      ustring sensorSoftwareVersion; //!< The version number for the software used for the data collection.
      ustring sensorFirmwareVersion; //!< The version number for the firmware installed in the sensor at the time of
                                     //!< data collection.

      float temperature{ E57_FLOAT_MAX };      //!< The ambient temperature, measured at the sensor, at the time of data
                                               //!< collection (in degrees Celsius).
      float relativeHumidity{ E57_FLOAT_MAX }; //!< The percentage relative humidity, measured at the sensor, at the
                                               //!< time of data collection. Shall be in the interval [0, 100].
      float atmosphericPressure{ E57_FLOAT_MAX }; //!< The atmospheric pressure, measured at the sensor, at the time of
                                                  //!< data collection (in Pascals). Shall be positive.

      DateTime acquisitionStart; //!< The start date and time that the data was acquired.
      DateTime acquisitionEnd;   //!< The end date and time that the data was acquired.

      RigidBodyTransform pose; //!< A rigid body transform that describes the coordinate frame of the 3D imaging
                               //!< system origin in the file-level coordinate system.
      IndexBounds indexBounds; //!< The bounds of the row, column, and return number of all the points in this Data3D.
      CartesianBounds cartesianBounds; //!< The bounding region (in cartesian coordinates) of all the points in
                                       //!< this Data3D (in the local coordinate system of the points).
      SphericalBounds sphericalBounds; //!< The bounding region (in spherical coordinates) of all the points in
                                       //!< this Data3D (in the local coordinate system of the points).
      IntensityLimits
         intensityLimits; //!< The limits for the value of signal intensity that the sensor is capable of producing.
      ColorLimits colorLimits; //!< The limits for the value of red, green, and blue color that the sensor is
                               //!< capable of producing.

      PointGroupingSchemes pointGroupingSchemes; //!< The defined schemes that group points in different ways
      PointStandardizedFieldsAvailable
         pointFields; //!< This defines the active fields used in the WritePoints function.

      int64_t pointsSize{ 0 }; //!< Total size of the compressed vector of PointRecord structures referring to the
                               //!< binary data that actually stores the point data
   };

   //! @brief Stores pointers to user-provided buffers
   template <typename COORDTYPE = float> struct Data3DPointsData_t
   {
      COORDTYPE *cartesianX{
         nullptr
      }; //!< pointer to a buffer with the X coordinate (in meters) of the point in Cartesian coordinates
      COORDTYPE *cartesianY{
         nullptr
      }; //!< pointer to a buffer with the Y coordinate (in meters) of the point in Cartesian coordinates
      COORDTYPE *cartesianZ{
         nullptr
      }; //!< pointer to a buffer with the Z coordinate (in meters) of the point in Cartesian coordinates
      int8_t *cartesianInvalidState{ nullptr }; //!< Value = 0 if the point is considered valid, 1 otherwise

      float *intensity{ nullptr }; //!< pointer to a buffer with the Point response intensity. Unit is unspecified
      int8_t *isIntensityInvalid{ nullptr }; //!< Value = 0 if the intensity is considered valid, 1 otherwise

      uint8_t *colorRed{ nullptr };      //!< pointer to a buffer with the Red color coefficient. Unit is unspecified
      uint8_t *colorGreen{ nullptr };    //!< pointer to a buffer with the Green color coefficient. Unit is unspecified
      uint8_t *colorBlue{ nullptr };     //!< pointer to a buffer with the Blue color coefficient. Unit is unspecified
      int8_t *isColorInvalid{ nullptr }; //!< Value = 0 if the color is considered valid, 1 otherwise

      COORDTYPE *sphericalRange{
         nullptr
      }; //!< pointer to a buffer with the range (in meters) of points in spherical coordinates. Shall be non-negative
      COORDTYPE *sphericalAzimuth{
         nullptr
      }; //!< pointer to a buffer with the Azimuth angle (in radians) of point in spherical coordinates
      COORDTYPE *sphericalElevation{
         nullptr
      }; //!< pointer to a buffer with the Elevation angle (in radians) of point in spherical coordinates
      int8_t *sphericalInvalidState{ nullptr }; //!< Value = 0 if the range is considered valid, 1 otherwise

      int32_t *rowIndex{ nullptr }; //!< pointer to a buffer with the row number of point (zero based). This is useful
                                    //!< for data that is stored in a regular grid.  Shall be in the interval (0, 2^31).
      int32_t *columnIndex{
         nullptr
      }; //!< pointer to a buffer with the column number of point (zero based). This is useful for data that is stored
         //!< in a regular grid. Shall be in the interval (0, 2^31).
      int8_t *returnIndex{
         nullptr
      }; //!< pointer to a buffer with the number of this return (zero based). That is, 0 is the first return, 1 is the
         //!< second, and so on. Shall be in the interval (0, returnCount). Only for multi-return sensors.
      int8_t *returnCount{
         nullptr
      }; //!< pointer to a buffer with the total number of returns for the pulse that this corresponds to. Shall be in
         //!< the interval (0, 2^7). Only for multi-return sensors.

      double *timeStamp{
         nullptr
      }; //!< pointer to a buffer with the time (in seconds) since the start time for the data, which is given by
         //!< acquisitionStart in the parent Data3D Structure. Shall be non-negative
      int8_t *isTimeStampInvalid{ nullptr }; //!< Value = 0 if the timeStamp is considered valid, 1 otherwise

      // E57_EXT_surface_normals
      float *normalX{ nullptr }; //!< The X component of a surface normal vector (E57_EXT_surface_normals).
      float *normalY{ nullptr }; //!< The Y component of a surface normal vector (E57_EXT_surface_normals).
      float *normalZ{ nullptr }; //!< The Z component of a surface normal vector (E57_EXT_surface_normals).
   };

   typedef Data3DPointsData_t<float> Data3DPointsData;
   typedef Data3DPointsData_t<double> Data3DPointsData_d;

   //! @brief Stores an image that is to be used only as a visual reference.
   struct E57_DLL VisualReferenceRepresentation
   {
      int64_t jpegImageSize{ 0 }; //!< Size of JPEG format image data in BlobNode.
      int64_t pngImageSize{ 0 };  //!< Size of PNG format image data in BlobNode.
      int64_t imageMaskSize{ 0 }; //!< Size of PNG format image mask in BlobNode.
      int32_t imageWidth{ 0 };    //!< The image width (in pixels). Shall be positive
      int32_t imageHeight{ 0 };   //!< The image height (in pixels). Shall be positive

      bool operator==( const VisualReferenceRepresentation &rhs ) const
      {
         return ( jpegImageSize == rhs.jpegImageSize ) && ( pngImageSize == rhs.pngImageSize ) &&
                ( imageMaskSize == rhs.imageMaskSize ) && ( imageWidth == rhs.imageWidth ) &&
                ( imageHeight == rhs.imageHeight );
      }
      bool operator!=( const VisualReferenceRepresentation &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores an image that is mapped from 3D using the pinhole camera projection model.
   struct E57_DLL PinholeRepresentation
   {
      int64_t jpegImageSize{ 0 }; //!< Size of JPEG format image data in BlobNode.
      int64_t pngImageSize{ 0 };  //!< Size of PNG format image data in BlobNode.
      int64_t imageMaskSize{ 0 }; //!< Size of PNG format image mask in BlobNode.
      int32_t imageWidth{ 0 };    //!< The image width (in pixels). Shall be positive
      int32_t imageHeight{ 0 };   //!< The image height (in pixels). Shall be positive
      double focalLength{ 0. };   //!< The camera's focal length (in meters). Shall be positive
      double pixelWidth{ 0. };    //!< The width of the pixels in the camera (in meters). Shall be positive
      double pixelHeight{ 0. };   //!< The height of the pixels in the camera (in meters). Shall be positive
      double principalPointX{
         0.
      }; //!< The X coordinate in the image of the principal point, (in pixels). The principal point is the intersection
         //!< of the z axis of the camera coordinate frame with the image plane.
      double principalPointY{ 0. }; //!< The Y coordinate in the image of the principal point (in pixels).

      bool operator==( const PinholeRepresentation &rhs ) const
      {
         return ( jpegImageSize == rhs.jpegImageSize ) && ( pngImageSize == rhs.pngImageSize ) &&
                ( imageMaskSize == rhs.imageMaskSize ) && ( imageWidth == rhs.imageWidth ) &&
                ( imageHeight == rhs.imageHeight ) && ( focalLength == rhs.focalLength ) &&
                ( pixelWidth == rhs.pixelWidth ) && ( pixelHeight == rhs.pixelHeight ) &&
                ( principalPointX == rhs.principalPointX ) && ( principalPointY == rhs.principalPointY );
      }
      bool operator!=( const PinholeRepresentation &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores an image that is mapped from 3D using a spherical projection model
   struct E57_DLL SphericalRepresentation
   {
      int64_t jpegImageSize{ 0 }; //!< Size of JPEG format image data in BlobNode.
      int64_t pngImageSize{ 0 };  //!< Size of PNG format image data in BlobNode.
      int64_t imageMaskSize{ 0 }; //!< Size of PNG format image mask in BlobNode.
      int32_t imageWidth{ 0 };    //!< The image width (in pixels). Shall be positive
      int32_t imageHeight{ 0 };   //!< The image height (in pixels). Shall be positive
      double pixelWidth{ 0. };    //!< The width of a pixel in the image (in radians). Shall be positive
      double pixelHeight{ 0. };   //!< The height of a pixel in the image (in radians). Shall be positive.

      bool operator==( const SphericalRepresentation &rhs ) const
      {
         return ( jpegImageSize == rhs.jpegImageSize ) && ( pngImageSize == rhs.pngImageSize ) &&
                ( imageMaskSize == rhs.imageMaskSize ) && ( imageWidth == rhs.imageWidth ) &&
                ( imageHeight == rhs.imageHeight ) && ( pixelWidth == rhs.pixelWidth ) &&
                ( pixelHeight == rhs.pixelHeight );
      }
      bool operator!=( const SphericalRepresentation &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores an image that is mapped from 3D using a cylindrical projection model.
   struct E57_DLL CylindricalRepresentation
   {
      int64_t jpegImageSize{ 0 }; //!< Size of JPEG format image data in Blob.
      int64_t pngImageSize{ 0 };  //!< Size of PNG format image data in Blob.
      int64_t imageMaskSize{ 0 }; //!< Size of PNG format image mask in Blob.
      int32_t imageWidth{ 0 };    //!< The image width (in pixels). Shall be positive
      int32_t imageHeight{ 0 };   //!< The image height (in pixels). Shall be positive
      double pixelWidth{ 0. };    //!< The width of a pixel in the image (in radians). Shall be positive
      double pixelHeight{ 0. };   //!< The height of a pixel in the image (in meters). Shall be positive
      double radius{ 0. }; //!< The closest distance from the cylindrical image surface to the center of projection
                           //!< (that is, the radius of the cylinder) (in meters). Shall be non-negative
      double principalPointY{ 0. }; //!< The Y coordinate in the image of the principal point (in pixels). This is the
                                    //!< intersection of the z = 0 plane with the image

      bool operator==( const CylindricalRepresentation &rhs ) const
      {
         return ( jpegImageSize == rhs.jpegImageSize ) && ( pngImageSize == rhs.pngImageSize ) &&
                ( imageMaskSize == rhs.imageMaskSize ) && ( imageWidth == rhs.imageWidth ) &&
                ( imageHeight == rhs.imageHeight ) && ( pixelWidth == rhs.pixelWidth ) &&
                ( pixelHeight == rhs.pixelHeight ) && ( radius == rhs.radius ) &&
                ( principalPointY == rhs.principalPointY );
      }
      bool operator!=( const CylindricalRepresentation &rhs ) const
      {
         return !operator==( rhs );
      }
   };

   //! @brief Stores an image from a camera
   struct E57_DLL Image2D
   {
      ustring name;        //!< A user-defined name for the Image2D.
      ustring guid;        //!< A globally unique identification string for the current version of the Image2D object
      ustring description; //!< A user-defined description of the Image2D
      DateTime acquisitionDateTime; //!< The date and time that the image was taken

      ustring associatedData3DGuid; //!< The globally unique identification string (guid element) for the Data3D that
                                    //!< was being acquired when the picture was taken

      ustring sensorVendor; //!< The name of the manufacturer for the sensor used to collect the points in this Data3D.
      ustring sensorModel;  //!< The model name or number for the sensor.
      ustring sensorSerialNumber; //!< The serial number for the sensor.

      RigidBodyTransform pose; //!< A rigid body transform that describes the coordinate frame of the camera in the
                               //!< file-level coordinate system

      VisualReferenceRepresentation
         visualReferenceRepresentation; //!< Representation for an image that does not define any camera projection
                                        //!< model. The image is to be used for visual reference only
      PinholeRepresentation
         pinholeRepresentation; //!< Representation for an image using the pinhole camera projection model
      SphericalRepresentation
         sphericalRepresentation; //!< Representation for an image using the spherical camera projection model.
      CylindricalRepresentation
         cylindricalRepresentation; //!< Representation for an image using the cylindrical camera projection model
   };

   //! @brief Identifies the format representation for the image data
   enum Image2DType
   {
      E57_NO_IMAGE = 0,      //!< No image data
      E57_JPEG_IMAGE = 1,    //!< JPEG format image data.
      E57_PNG_IMAGE = 2,     //!< PNG format image data.
      E57_PNG_IMAGE_MASK = 3 //!< PNG format image mask.
   };

   //! @brief Identifies the representation for the image data
   enum Image2DProjection
   {
      E57_NO_PROJECTION = 0, //!< No representation for the image data is present
      E57_VISUAL = 1,        //!< VisualReferenceRepresentation for the image data
      E57_PINHOLE = 2,       //!< PinholeRepresentation for the image data
      E57_SPHERICAL = 3,     //!< SphericalRepresentation for the image data
      E57_CYLINDRICAL = 4    //!< CylindricalRepresentation for the image data
   };

} // end namespace e57
